42120222131 has 8 divisors (see below), whose sum is σ = 46466587104. Its totient is φ = 37931906880.

The previous prime is 42120222113. The next prime is 42120222139. The reversal of 42120222131 is 13122202124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42120222131 - 2²² = 42116027827 is a prime.

It is a super-2 number, since 2×42120222131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42120222139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39511871 + ... + 39512936.

It is an arithmetic number, because the mean of its divisors is an integer number (5808323388).

Almost surely, 2^42120222131 is an apocalyptic number.

42120222131 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42120222131 is a deficient number, since it is larger than the sum of its proper divisors (4346364973).

42120222131 is a wasteful number, since it uses less digits than its factorization.

42120222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79024861.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42120222131 its reverse (13122202124), we get a palindrome (55242424255).

The spelling of 42120222131 in words is "forty-two billion, one hundred twenty million, two hundred twenty-two thousand, one hundred thirty-one".